Re: [NTLK] Another Battery Miracle!

From: Daniel Ho (hod_at_mac.com)
Date: Tue Feb 19 2002 - 10:09:36 EST


Johannes,

Thanks for the description of what's really going on inside the Newton.
Hmmm...outsmarted by my "obsolete" Newt already. :-)

d.

-- 
Daniel Ho/Toronto
hod_at_mac.com

On 2002/02/19 3:51 AM, "Johannes Wolf" <jwolf_at_xe.estec.esa.nl> wrote:

> > I would not call it a miracle. > If you have a lot of rechargeable batteries and different charging devices > you will make this experience sooner or later as well: > the Newt does not have a simple charging method as you will find for cheap > charging devices, which apply a constant current until you disconnect the > battery. > Like more intelligent charging devices the Newt will apply a charging > current and then check the battery voltage. If the voltage has not increased > by a certain value (as it happened in your case) the Newt "assumes" that the > battery is dead and stops charging. > If you repeat this cycle (as you did) the Newt will start this cycle once > again by adding a certain charge to the battery, which still might be not > enough to increase the battery voltage sufficiently. > As soon as the "starting voltage" is reached the Newt will continue charging > the battery until the charging end voltage is reached. > Doing this (including the discharge) you will also perform what is called > "formatting" the battery. > If you run the complete cycle a few times there are good chances to get back > to the full battery capacity. > No miracle, no mystery. > > Johannes

-- This is the Newtontalk mailinglist - http://www.newtontalk.net To unsubscribe or manage: visit the above link or mailto:newtontalk-request_at_newtontalk.net?Subject=unsubscribe



This archive was generated by hypermail 2.1.2 : Sat Mar 02 2002 - 10:03:19 EST